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Finding the Fourth Proportional to 449,201.14, 619,911.14 and 255,636.61

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Solution

The fourth proportional to 449,201.14, 619,911.14 and 255,636.61 is: 352,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,201.14 : 619,911.14 = 255,636.61 : x
  2. Step 2: Convert to fraction form
    449,201.14/619,911.14 = 255,636.61/x
  3. Step 3: Cross multiply
    449,201.14x = 619,911.14 × 255,636.61
  4. Step 4: Simplify right side
    449,201.14x = 158,471,984,022.84
  5. Step 5: Solve for x
    x = 158,471,984,022.84/449,201.14
  6. Step 6: Final answer
    x = 352,786.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.